How do I use the new JSON mode?

API
10

Based on the documentation for gpt-3.5-turbo.

curl https://api.openai.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OPENAI_API_KEY" \
-d '{
  "model": "gpt-3.5-turbo-1106",
  "response_format": {"type": "json_object"},
  "messages": [
    {
     "role": "system",
      "content": "You are a helpful assistant that extracts data and returns it in JSON format." 
    },
    {
      "role": "user",
      "content": "What is the weather like in Boston?"
    }
  ],
  "functions": [
    {
      "name": "get_current_weather",
      "description": "Get the current weather in a given location",
      "parameters": {
        "type": "object",
        "properties": {
          "location": {
            "type": "string",
            "description": "The city and state, e.g. San Francisco, CA"
          },
          "unit": {
            "type": "string",
            "enum": ["celsius", "fahrenheit"]
          }
        },
        "required": ["location"]
      }
    }
  ],
  "function_call": "auto"
}'